/Engine/Plugins/Runtime/MassEntity/Source/MassEntity/Public/MassEntityQuery.h
Will gather all archetypes from InEntityManager matching this->Requirements. Note that no work will be done if the cached data is up to date (as tracked by EntitySubsystemHash and ArchetypeDataVersion properties).
void CacheArchetypes ( const [FMassEntityManager](API\Plugins\MassEntity\FMassEntityManager) & InEntityManager )